To calculate the number of rows and columns for the children to stand in, we need to find a square number that is less than or equal to 800. The nearest square number to 800 is 25^2 (625). Therefore, the children can stand in 25 rows and 25 columns.


To calculate the total number of children, we need to multiply the number of rows by the number of columns. Therefore, the total number of children is 25 x 25 = 625.


To calculate the number of children left out, we need to subtract the total number of children from the initial number of children. Therefore, the number of children left out is 800 - 625 = 175.


There are 800 children in the school, and they need to stand in a way that the number of rows is equal to the number of columns. To calculate the number of rows and columns, we need to find a square number that is less than or equal to 800. The nearest square number to 800 is 625, which is 25^2. Therefore, the children can stand in 25 rows and 25 columns.

To calculate the total number of children, we need to multiply the number of rows by the number of columns. Therefore, the total number of children is 25 x 25 = 625.

To calculate the number of children left out, we need to subtract the total number of children from the initial number of children. Therefore, the number of children left out is 800 - 625 = 175. These children will be left out of the arrangement since there aren't enough children to form another complete row or column.

16 children will be left out. Find out the square root and remainder will be answer.